NCL30185数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The NCL30185 is an AC-DC power factor corrected flyback controller targeting isolated and non−isolated buck-boost/SEPIC constant current LED drivers. The controller operates in a quasi−resonant mode to provide optimal efficiency. Thanks to a novel control method, the device is able to tightly regulate a constant LED current from the primary side. This removes the need for secondary side feedback circuitry, biasing and an optocoupler. The device is highly integrated with a minimum number of external components. A robust suite of safety protection is built in to simplify the design. This controller has integrated 3 step log dimming which allows an LED bulb or luminaire to be dimming from a standard wall switch.
In addition to steps of 70% and 25% which are similar to a traditional 3 way lamp, one additional step of 5% current is included to support deep dimming applications.

特性 Features

• Constant Current Control with Primary Side Feedback
• No need for binning of LEDs or production trimming for accuracy
• No need for binning of LEDs or production trimming for accuracy
• Exceeds industry requirements for lighting
• 3 dimmable steps of 70%, 25%, and 5% of full current
• Energy saving dimming with standard wall switch
• Line Feedforward for Enhanced Regulation Accuracy
• Supports accurate regulation for universal mains applications
• Wide Vcc operating range
• Simplifies support for a broad range of LED forward voltages with one magnetic design
• User Programmable Thermal Foldback
• Protects LED driver from overheating in severe situations
• Output LED open and short protection
• Robust fault handling of common LED system faults
• Secondary Diode Short Protection
• Avoids overheating in fault condition
• VCC undervoltage and overvoltage protection
• Robust fault handling
• Wide Temperature range of -40 to 125 °C
• Suports outdoor and high temperature environments
• Auto-recoverable (B-version) and Latched (A-version) fault handling options

应用 Application

• Integrated LED Driver Electronics
• LED Lighting
• LED Bulbs
• LED Driver Power Supplies
• LED Light Engines
• LED Tubes
• Electronic Control Gear for LED Systems

简介

NCL30185属于集成电路（IC）的LED驱动器。由制造生产的NCL30185LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。